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Time to return my 4850! - Page 2

post #11 of 29
I'll be exchanging mine for a 4870 when they hit shelves!
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post #12 of 29
"I was playing CoD4 when it started artifacting and freezing, I restarted my computer and it did it every time I started a game."
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post #13 of 29
Thread Starter 
Quote:
Originally Posted by OcCam View Post
There is a differnce betweeen brands and voltages set in the bios of these cards.

It seems to me that the visiontek cards have a lower voltage setting on the bios. Some have been able to OC higher using the MSI bios and some other modded bios's .

Keep in mind the voltage range set in these bios is very limited and you still need to pencil/hard mod to OC past around 720. ( as of now OC past 700 is only workable through editing the bios clocks).

hope this helps.
Well that explains the core, but my memory is artifacting at 1040 now as well. Not much headroom at all if you ask me.
post #14 of 29
Quote:
Originally Posted by OcCam View Post
There is a differnce betweeen brands and voltages set in the bios of these cards.

It seems to me that the visiontek cards have a lower voltage setting on the bios. Some have been able to OC higher using the MSI bios and some other modded bios's .

Keep in mind the voltage range set in these bios is very limited and you still need to pencil/hard mod to OC past around 720. ( as of now OC past 700 is only workable through editing the bios clocks).

hope this helps.
So your saying the artifacts could be a voltage issue (if we can rule out temp)? That could be considering you get the same sort of issues when OCing RAM you have to up voltage to keep it running right.

So n00b question time:
Can you access GPU bios without doing a flash update? (And how?
If you must do a flash update to the GPU bios to change voltage, how? Where do I find the BIOS version to flash it to?
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post #15 of 29
Thread Starter 
Just got back and exchanged it. Bestbuy didn't even ask any questions, just took it back and gave me a new one. Let's hope this one works out better!
post #16 of 29
goodluck on your OC give us some high numbers!!!
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post #17 of 29
Thread Starter 
Well, off the bat I went with 700/1100 and my system locked up. So re-installed the drivers (didn't re-install after swapping cards). Now letting auto-tune work, it hit 700 core, and backed it down to 690. Memory is 1138 and rising!

Seems the max load temp is 80c at 40% fan speed (not bad when that was the stock idle temps , although horrible compared to my 8800GT!)
post #18 of 29
Whats the stock fan speed at? Tweak the fan speed if its really low.
 
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post #19 of 29
Thread Starter 
Stock fan speed is anywhere from 10-23% I believe. 40% is a nice sweet spot for me - still inaudible and decent cooling. Once Rivatuner gets updated I will set up interval cooling.

Auto-tune ended at 690/1148 although I don't trust it! Yup, Auto-tune sucks! Artifacts everywhere in ATITool.
post #20 of 29
Quote:
Originally Posted by ignite View Post
Stock fan speed is anywhere from 10-23% I believe. 40% is a nice sweet spot for me - still inaudible and decent cooling. Once Rivatuner gets updated I will set up interval cooling.

Auto-tune ended at 690/1148 although I don't trust it! Yup, Auto-tune sucks! Artifacts everywhere in ATITool.
When I did Auto-Tune in the ATI Overdrive I got those same exact numbers when it finished, but I knew for a fact I could not run the memory at that speed due to it artifacting in ATI Tool so I back down to 1100mhz and 700mhz on the core which is stable for me in all my games and benchmarks.
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